Thank you for sharing this. It doesn't seem to have anything to do with the game's own programming. I suspect that this is caused by one of the following:
1. Hardware. e.g.) A person's computer components may be causing it.
2. Software. e.g.) Maybe the operating system update caused some glitches with the game.
3. Something else. I'm not sure yet.
In the meantime, make sure to save regularly to avoid losing progress. I apologize for the inconvenience caused by this, and thank you for getting this far into the game!